Re: [PATCH v2] spi: Add FSI-attached SPI controller driver

[Eddie James]

On 2/4/20 5:05 AM, Andy Shevchenko wrote:
> On Tue, Feb 4, 2020 at 12:30 AM Eddie James <eajames@xxxxxxxxxxxxx> wrote:
> > There exists a set of SPI controllers on some POWER processors that may
> > be accessed through the FSI bus. Add a driver to traverse the FSI CFAM
> > engine that can access and drive the SPI controllers. This driver would
> > typically be used by a baseboard management controller (BMC).
> >
> > The SPI controllers operate by means of programming a sequencing engine
> > which automatically manages the usual SPI protocol buses. The driver
> > programs each transfer into the sequencer as various operations
> > specifying the slave chip and shifting data in and out on the lines.
> Some comments left unsettled in v1, thus applicable here.


I think I addressed all of Andy's comments on v1 now, if Andy agreed 
about leaving the byte shifting as-is in fsi_spi_data_in/out.


Thanks,

Eddie


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